Premium
Leaf Removal in Grain Sorghum. I. Effects of Certain Defoliation Treatments on Yield and Components of Yield 1
Author(s) -
Stickler F. C.,
Pauli A. W.
Publication year - 1961
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1961.00021962005300020011x
Subject(s) - yield (engineering) , anthesis , agronomy , sorghum , grain yield , biology , 30 day yield , horticulture , cultivar , materials science , metallurgy
Synopsis A curvilinear relationship between grain yield and leaf area was found. Generally, changes in each of the 3 yield components were responsible for yield differences, although number of seeds per head and seed weight underwent greatest change. Greater yield reduction resulted from removing leaf area from upper than from lower portions of the plant. Likewise, removing alternate leaves was more deleterious than removing half of each leaf. In 1959, mean yield decreases of 23, 35, 43, and 95%, respectively, were obtained from removing approximately 33, 50, 67, and 100% of the leaf area at late boot and anthesis stages.